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2006/02/27-28H. Wozniak / TVO workshop3 HORIZON project: high-level objectives up to 4 years Computational modelling of cosmological structures formation. Prediction of observational signatures as a function of various physical scenarios. Promote state-of-the-art expertise in parallel programming and applied mathematics in computational cosmology. Put together several experts in the field to share knowledge and software, and optimize use of supercomputer centres. Provide to the scientific community an easy access to top quality simulations data, as well as educational and public outreach.

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2006/02/27-28H. Wozniak / TVO workshop9 Partnership with HPC1 Hardware and Software support on working days 3 master nodes 64 Go each available full time 200 000 CPU hours for 3 years in 2 possible configurations Compact: 5 additional nodes for 95% of the time OR Distributed: 50 additional nodes for 5% of the time Annual planning with HPC1 team 5 To storage Integration within Horizon Mini-grid (VPN, SSH) with RENATER + 100 Mbits

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2006/02/27-28H. Wozniak / TVO workshop10 HORIZON project: databases and VO Will use GalICS as a prototype (Guiderdoni et al.) http://galics.cosmologie.fr/ or http://vo.iucaa.ernet.in/galics/http://galics.cosmologie.fr/http://vo.iucaa.ernet.in/galics/ The GalICS/MoMaF Database of Galaxies includes information on: –the physical properties of galaxies, –their location in dark matter structures, –the merging history trees that link their progenitors and descendants, –the rest-frame spectral energy distributions in the ultraviolet, optical, infrared and submillimeter wavelength ranges; –and the absolute and apparent magnitudes in many photometric bands ranging from the ultraviolet to the submillimetre.photometric bands

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2006/02/27-28H. Wozniak / TVO workshop14 SITools is based on a concept of services: interconnected by a virtual Web Services bus, offering a global service which includes basic services added-value services (AVS), accessed by one or more client applications. The system may run locally, on a single machine, or be distributed over several machines or even several laboratories. SITools defines 5 types of basic service which can be "plugged in" to the SITools virtual bus : On-line catalog : provides access to metadata and data accessible on-line. Off-line catalog : identical to the On-Line Catalog Service with batch access to data. Repository : links all accessible services to form a global system; Command Processing : end-to-end management of user commands, User Space : manages the command and processing result space, where the user will find command results. A SITools instance has one repository, one user space, one command processing, and may has many catalogs. SITools & Virtual Observatory As SITools design was done in VO logical concepts (from the interoperability point of view), its not a big challenge to integrate VO capabilities. All the services are Web-services, catalogs are linked through synonyms, which could be UCDs, SITools has also the capability to use an added value service to handle VO protocol queries (SIAP, SSAP, VOQL, …) and to transform results in VOtable format. A study is undergoing for, initially, developing an AVS which can reply to a SIAP request.